Non-invasive brain-computer interfaces target medical rehab

At Wuhan University's Renmin Hospital, on Aug 26, the hospital reported the world's first high-resolution semi-invasive retinal brain-computer interface clinical application. Days earlier, Tianjin University and United Imaging had released uMR Shen Guan, a full-stack magnetic-resonance brain-computer interface combining imaging, hardware and decoding. The two milestones place a broader question in view: can brain interfaces move from striking demonstrations to useful products?

The field follows three routes: invasive, semi-invasive and non-invasive. Non-invasive systems keep sensors outside the skull, trading some spatial precision for no surgery, reusability and portability. EEG — electroencephalography, the established way to record electrical brain activity — still dominates that category, while functional ultrasound and other signal-collection methods are being explored for higher spatial resolution, multimodal decoding and closed-loop feedback.

Medical rehabilitation is the clearest commercial path because indications can be defined, devices can be registered and hospitals already represent a customer base. Neuracle has built EEG-VR rehabilitation systems and motion-imagery VR rehab tools, serving hospitals including Huashan, Xuanwu and the China Rehabilitation Research Center. Its Shanghai exchange prospectus lists more than 20 medical-device registration certificates across EEG, electromyography, evoked-potential and transcranial electrical-stimulation equipment, including combined systems. In 2025, it ranked first domestically in EEG-machine shipments and shipment value.

Other markets are less settled. MindMatrices is developing a portable polysomnography device, a temporal-interference deep-brain stimulation system and a closed-loop sleep intervention built around sleep rhythms and neural modulation. Sleep and brain-state management could address a broader, frequent-use consumer market, but long-term efficacy and retention still need to be demonstrated. Direct human-computer interaction is further from stable revenue because keyboards, touchscreens, voice and eye tracking already dominate; nearer-term opportunities include assisting people with severe paralysis and providing an input layer in hands-occupied industrial settings.

So what changes in practice? For hospitals, the most credible near-term opportunity is rehabilitation equipment that can fit existing care pathways and procurement processes. For users, non-invasive sensing avoids surgery and can be reused or carried more easily, though it comes with a spatial-precision trade-off. The remaining obstacles are not only signal quality: engineering stability, clinical evidence, regulatory clearance, user retention and data governance will determine whether these systems become dependable tools rather than promising demonstrations.